Fix virtual/override/final usage in Source/web/.

Source/web/StorageQuotaClientImpl.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 namespace blink {
 
 class StorageQuotaClientImpl : public NoBaseWillBeGarbageCollectedFinalized<StorageQuotaClientImpl>, public StorageQuotaClient {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(StorageQuotaClientImpl);
 public:
     static PassOwnPtrWillBeRawPtr<StorageQuotaClientImpl> create()
     {
         return adoptPtrWillBeNoop(new StorageQuotaClientImpl());
     }
 
-    virtual ~StorageQuotaClientImpl();
+    ~StorageQuotaClientImpl() override;
 
-    virtual void requestQuota(ExecutionContext*, WebStorageQuotaType, unsigned long long newQuotaInBytes, StorageQuotaCallback*, StorageErrorCallback*) override;
-    virtual ScriptPromise requestPersistentQuota(ScriptState*, unsigned long long newQuotaInBytes) override;
+    void requestQuota(ExecutionContext*, WebStorageQuotaType, unsigned long long newQuotaInBytes, StorageQuotaCallback*, StorageErrorCallback*) override;
+    ScriptPromise requestPersistentQuota(ScriptState*, unsigned long long newQuotaInBytes) override;
 
     DEFINE_INLINE_VIRTUAL_TRACE() { StorageQuotaClient::trace(visitor); }
 
 private:
     StorageQuotaClientImpl();
 };
 
 } // namespace blink
 
 #endif // StorageQuotaClientImpl_h